Net Present Value Calculator
NPV = −initial investment + Σ cash flowₜ/(1+r)ᵗ.
Inputs and units
- Initial investment (positive outflow): Enter your value in the format and unit shown.
- Discount rate per period (%): Enter your value in the format and unit shown.
- Net cash flows at each period end: Enter your value in the format and unit shown.
Calculation method
NPV = −initial investment + Σ cash flowₜ/(1+r)ᵗ.
Worked example
The example values are: Initial investment (positive outflow) = 10000; Discount rate per period (%) = 10; Net cash flows at each period end = 4000,4000,4000
- NPV: -52.5920360631
- Present value of future flows: 9,947.40796394
- Period 1: 3,636.36363636
- Period 2: 3,305.78512397
- Period 3: 3,005.25920361
Assumptions and limitations
Use equal periods and a discount rate matching each period. Taxes and risk are not modeled automatically.
Using your result
Select Calculate after changing inputs. Copy result copies the displayed output; Download result saves a text file. Reset returns the form to its example inputs. Calculations run in your browser.
Net Present Value Calculator FAQs
What method does this calculator use?
NPV = −initial investment + Σ cash flowₜ/(1+r)ᵗ.
What should I check before using the result?
Use equal periods and a discount rate matching each period. Taxes and risk are not modeled automatically.